大掺量粉煤灰高水充填材料的研制  

Research and Preparation of High Water Filling Material with High Dosage of Fly Ash

作　　者：孙道胜[1] 胡梅梅[1] 王爱国[1] 刘开伟[1] 管艳梅[1] 

机构地区：[1]安徽建筑大学安徽省先进建筑材料重点实验室,合肥230022

出　　处：《硅酸盐通报》2016年第4期1074-1079,共6页Bulletin of the Chinese Ceramic Society

基　　金：淮南矿业集团科研项目计划;安徽省高等教育人才项目和安徽省高校优秀青年骨干人才国外访学研修项目(gxfx ZD2016134)

摘　　要：文章研究了不同水固比条件下粉煤灰掺量对高水充填材料凝结时间、悬浮性、强度和水化放热量等性能的影响,研制出大掺量粉煤灰高水充填材料,并分析了其经济成本。研究表明:在同一水固比条件下,高水充填材料的凝结时间随着粉煤灰掺量的增加会延长,其强度和反应温升会有所降低,而对析水率和结实率的影响不大。研制的粉煤灰掺量为60%的高水充填材料,在水固比为1∶1时,凝结时间为11 min、1 d和7 d抗压强度分别为2.1MPa、2.8 MPa,其反应温升较对比组(不掺粉煤灰)降低了22.9%,且成本降低了54.6%。The paper studies the influence of the dosage of fly ash on the setting time,suspension,strength and internal reaction temperature of high water filling material is studied in different water-solid ratio system,optimize the ratio of high water filling material and analyze the economic cost. The results show that in the same water-solid ratio system,the setting time of high water filling material can be prolonged with the increase of the dosage of fly ash,the strength and internal reaction temperature will have a certain reduction,but the water content and seed setting rate are little influenced. At the watersolid ratio of 1∶ 1,Fly ash dosage is 60%,its various performance is as much as the blank group,Its setting time is 11 mins,the compressive strength of 1 d and 7 d are 2. 1 MPa and 2. 8 MPa respectively,But the reaction temperature is 22. 9% lower than the blank group,and the cost is reduced by 54. 6%.

关 键 词：高水充填材料 粉煤灰 凝结时间 抗压强度 反应温升 

分 类 号：TQ175[化学工程—硅酸盐工业]